Most bags that are available are too deep for m43rds kit, including the one that is on offer from 7DS. However, saying that, I did buying last year for more than the current price. It was excellent value then but the best way to use it is with lenses stacked together with reversed end caps.
Saying all that, my most used bag is a 10 year old Lowepro that is essentially a lrge waist pack with padded main strap as well as a shoulder strap. Don't recall its name but I ended up cutting the waist straps off and just using the shoulder strap. It comfortably holds my EM1.2 with grip, my 12-40 and 40-150 Pro lenses, MC14, my Pen F and, at a push, my 75-300. This is what I took to South African safari in July. Easy to access too.

I can fit a GX9 and with lens attached and three others in along with the usual spare battery, lens cloth, spare cards etc
Mostly drop it in my non camera specific rucksack although its foldup shoulder bag comes in handy when wandering in busy crowded places

I have a Lowepro Nova 160AW which comfortably takes my E-M5 and 2 or 3 lenses. It has loads of pockets for filters, batteries, memory cards etc plus a handy (if difficult to fit) waterproof cover - hence the All Weather suffix. Recommended.

I have a Lowepro Nova 160AW which comfortably takes my E-M5 and 2 or 3 lenses. It has loads of pockets for filters, batteries, memory cards etc plus a handy (if difficult to fit) waterproof cover - hence the All Weather suffix. Recommended.

Don't trust the 'All Weather' description - it doesn't give protection for more than a few minutes in the lightest shower!

I carried an Olympus E500 in a Lowepro Nova AW whilst backpacking in Scotland. It started to rain, so I put on the cover. When I got to my destination I found an inch of water in the bottom of the bag. Fortunately I'd put my wallet in the bottom of the bag and the E500 was sitting on top of it, giving some protection.

The problem is that the cover only covers the front and sides of the bag, not the back. With the bag in the normal carrying position the unprotected back rests against the body. When wearing a rainproof jacket, the rain runs down the jacket and soaks into the back.

My wallet was well and truly soaked through. Not much water had entered the camera and luckily it was OK when it had dried out.